CN112379837B - Method and device for generating wave recording file of feeder terminal - Google Patents
Method and device for generating wave recording file of feeder terminal Download PDFInfo
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- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
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Abstract
The invention relates to a generation method and a generation device of a wave recording file of a feeder terminal and a power system distribution terminal comprising the generation device. When the data information file is transmitted, the content to be uploaded of each frame of message is determined through an algorithm, and the message is immediately organized and uploaded when the message is uploaded. Therefore, the use of the storage space is reduced, the time is saved, the occupation of the recording data to the storage space is reduced, and a larger redundant space is reserved for preparing for the later new increasing demand.
Description
Technical Field
The invention relates to the technical field related to power distribution systems, in particular to a generation method and a generation device of a wave recording file of a feeder terminal and a power distribution terminal of a power system comprising the generation device of the wave recording file of the feeder terminal.
Background
The wave recording data of the feeder terminal generally stores wave recording files in a COMTRADE format in the existing products, and when the power distribution master station calls the wave recording files, the feeder terminal sends the wave recording files through 101/104 file service.
According to industry standards, the feeder terminal needs to store at least 64 sets of wave records, at least 8 analog channels, at least 16 switching value channels, and the wave record sampling rate is 4000, namely 80 points of 1 cycle, and one wave record needs to store 14 cycles of 5 cycles before the fault and 9 cycles after the fault, namely 1120 points.
The current feeder terminal storage medium is FLASH, and the read-write unit is 4k. If the COMTRADE format is adopted for storage, each group of wave recording needs to have a cfg file (configuration information) and a dat file (data information), and the cfg file is in a text format, and the size of the cfg file is not more than 4k, so that each cfg file occupies 4k; the dat file size is (sampling sequence number 4 bytes+sampling time 4 bytes+2 bytes analog channel 8+switching value channel 2 bytes) ×sampling point number 1120= 29120 bytes= 28.4375k, and the read-write unit of the storage medium FLASH is 4k, so that one data file occupies 32k, and all recording files occupy (32+4) ×64=2304k.
Because the feeder terminal product belongs to an embedded, low-power-consumption and low-cost product, the price competition is very strong, and in order to reduce the cost, the feeder terminal product needs to occupy less storage space and memory space as much as possible. The current feeder terminal FLASH size is 8M, besides recording data, important information such as history files, log files, parameters, fixed values, information point tables and the like are stored, and the information needs double backup, and the recording file occupies 28% of the whole storage space. As the demands of users continue to increase, new storage space needs to be opened up for new functions.
Disclosure of Invention
Based on the above situation in the prior art, the present invention aims to provide a recording data generating method capable of saving more storage space, so as to reduce occupation of recording data to the storage space, and leave a larger redundant space for preparing for a new increase demand in the future.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method for generating a wave recording file of a feeder terminal, including the steps of:
when a message of calling the configuration information file is received, temporarily generating the configuration information file according to the configuration information and the recording starting time, storing the configuration information file in a FLASH fixed area of the feeder terminal, sequentially reading file contents from the fixed area, and uploading the file contents;
when receiving the message of the calling data information file, calculating the initial sampling point and the sampling point range to be uploaded of the current frame to determine the content of the message to be uploaded, and uploading the message.
Further, when receiving another message calling the configuration information file, regenerating the configuration information file, storing the configuration information file in a FLASH of the feeder terminal, and covering the last configuration information file.
Further, the calculating the starting sampling point to be uploaded by the current frame includes calculating by the following formula:
start sampling point=current frame number 8+1.
Further, the calculating the sampling point range to be uploaded by the current frame includes:
the sampling point range of the current frame is as follows: the starting sampling point of the current frame is up to (the starting sampling point of the current frame+7) sampling points.
Further, in the determining the message content to be uploaded, the message content includes a sampling sequence number, a sampling time, a sampling value of an analog channel, and a sampling value of a switching value channel.
Further, the wave recording list information is stored as follows: switching value sampling points 1 and … …, switching value sampling point n, analog value channel 1 sampling points 1 and … …, analog value channel 1 sampling points n and … …, analog value channel 8 sampling points 1 and … … and analog value channel 1 sampling point n; wherein n is the number of sampling points, and n is related to the sampling frequency.
Further, the sampling sequence number is the sequence number corresponding to the initial sampling point; the sampling time is obtained by the following formula:
sample time= (sample number-1) ×250 μs.
According to a second aspect of the present invention, there is provided a device for generating a wave recording file of a feeder terminal, including a configuration information file generating module and a data information file generating module; wherein, the liquid crystal display device comprises a liquid crystal display device,
the configuration information file generation module temporarily generates a configuration information file according to configuration information and recording starting time when receiving a message calling the configuration information file, stores the configuration information file in a FLASH fixed area of the feeder terminal, sequentially reads file contents from the fixed area and uploads the file contents;
and the data information file generation module is used for calculating a starting sampling point and a sampling point range to be uploaded in the current frame when receiving the message of the calling data information file so as to determine the content of the message to be uploaded and uploading the message.
Further, the configuration information file generating module regenerates the configuration information file and stores the configuration information file in the FLASH of the feeder terminal when receiving the message of another calling configuration information file, and covers the last configuration information file.
According to a third aspect of the present invention there is provided a power distribution terminal for an electrical power system comprising a feeder terminal record file generation device as provided in the second aspect of the present invention above to generate a record file and upload to a power distribution master station.
In summary, the present invention provides a method and an apparatus for generating a wave recording file of a feeder terminal, and a power system power distribution terminal including the same, where, when wave recording data is transmitted remotely, a configuration information file and a data information file adopt different manners, and the remote transmission of the configuration information file is to temporarily generate the configuration information file through configuration information after receiving a call command of a master station, and then sequentially read file contents according to a storage address of a temporary file and upload the file contents. When the data information file is transmitted, the content to be uploaded of each frame of message is determined through an algorithm, and the message is immediately organized and uploaded when the message is uploaded. Therefore, the use of the storage space is reduced, the time is saved, the occupation of the recording data to the storage space is reduced, and a larger redundant space is reserved for preparing for the later new increasing demand.
Drawings
FIG. 1 is a flow chart of a method for generating a feeder terminal record file according to the present invention;
fig. 2 is a schematic structural diagram of a device for generating a wave recording file of a feeder terminal according to the present invention.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The following describes the technical scheme of the present invention in detail with reference to the accompanying drawings. When the distribution master station reads the recording file, the recording data must be uploaded by organizing the message in the format of COMTRADE. In order to reduce the cost and the occupation of the storage space, according to one embodiment of the invention, a feeder terminal recording data generation method which saves the storage space more than the COMTRADE format is provided. The flow chart of the generating method is shown in fig. 1, and comprises the following steps:
when a message of calling the configuration information file is received, temporarily generating the configuration information file according to the configuration information and the recording starting time, storing the configuration information file in a FLASH fixed area of the feeder terminal, sequentially reading file contents from the fixed area, and uploading the file contents;
when receiving the message of the calling data information file, calculating the initial sampling point and the sampling point range to be uploaded of the current frame to determine the content of the message to be uploaded, and uploading the message.
This production method is further described below. The generation method comprises the steps of storing configuration information files and data information files and converting and uploading.
1. Storage of configuration information files
Because the configuration information of each group of wave recording data is the same except the starting time, one configuration file is not needed to be corresponding to one group of wave recording data, but when the master station calls the configuration information file (hereinafter referred to as a cfg file), one cfg file is temporarily generated according to the configuration information in the memory and the wave recording starting time and stored in the FLASH, the temporary file is sent to the master station through the file service, and when the master station calls another cfg file, the cfg file is regenerated and the previous cfg file is covered. The configuration information thus occupies a total of 4k of memory. The definition of the configuration information is shown in tables 1 to 3.
Table 1 configuration information definition
TABLE 2 analog channel configuration information definition
| Data type | Data content |
| unsigned char | Channel number |
| char* | Name of the name |
| char* | Short for short |
| char* | Phase difference |
| char* | Coefficients of |
| string | Unit (B) |
TABLE 3 definition of switching channel configuration information
| Data type | Data content |
| unsigned char | Channel number |
| char* | Name of the name |
| char* | Short for short |
When a call cfg file message issued by the power distribution master station is received, generating a cfg file (text format) in a COMTRADE format through the starting time and the content of configuration information in list information, wherein an example of the cfg file can be as follows:
“131A01FTU,1,1999
17,8A,9D
1,Ia,A,,A,2.347632E-03,0,0,-32767,32767,1,1,S
2,Ib,B,,A,2.347632E-03,0,0,-32767,32767,1,1,S
3,Ic,C,,A,2.347632E-03,0,0,-32767,32767,1,1,S
4,I0,Z,,A,2.347632E-03,0,0,-32767,32767,1,1,S
5,Ua,A,,V,1.548974E-02,0,0,-32767,32767,1,1,S
6,Ub,B,,V,1.548974E-02,0,0,-32767,32767,1,1,S
7,Uc,C,,V,1.548974E-02,0,0,-32767,32767,1,1,S
8,U0,Z,,V,1.548974E-02,0,0,-32767,32767,1,1,S
1,HW,0,,1
2,gl1gj,0,,1
3,ggpj,0,,1
4,xgxs,0,,1
5,sbb,0,,1
6,jdgj,0,,1
7,LVlb,0,,1
8,I0lb,0,,1
9,U0lb,0,,1
50
1
4000,1120
02/01/2020,05:28:17.597000
02/01/2020,05:28:17.707000
BINARY
1”
from the generated file content, the file size does not exceed 1k, so cfg files occupy a small space.
2. Storage of data information files
Since the sampling point numbers are consecutive integers starting from 1, it is not necessary that each point stores the sampling point number, but it is stored in a regular order; since the wave recording sampling is uniform sampling, according to the sampling frequency, the sampling time of each sampling point does not need to be recorded between every two adjacent points, and the format of the data information file can be shown in table 4.
TABLE 4 Table 4
As can be seen from table 4 above, the size of one set of recording data is 20160Byte, i.e. 19.6895k, and thus the space occupied by one set of recording data is 20k.
Therefore, the occupied space of all recording data is 20k x 64=1280k, the total occupied space is 1284k by adding 4k of a temporary cfg file, compared with the traditional COMTRADE storage method, the novel method reduces the storage space of 2304k-1284 k=1020 k, and the occupied space is only 44% of that of the original storage method.
The COMTRADE format is a standard storage format of the recording files, and the power distribution master station can only open the recording files in the standard COMTRADE format when opening and analyzing the recording files. Therefore, the current recording data storage format cannot be uploaded to the master station through a sequential reading method, and the local recording data is converted into a message in a standard COMTRADE format to be uploaded to the master station during remote transmission.
3. Conversion of configuration information files
Before file transmission, namely when a message of a cfg file is received from a power distribution master station, temporarily generating a cfg file according to configuration information in a memory and recording starting time, storing the cfg file in a fixed area of a FLASH, and sequentially reading file contents from the fixed area and uploading the file contents to the master station after the temporary file is stored.
4. Conversion of data information files
And converting in the file transmission process, namely immediately organizing and uploading a first frame of message when receiving a message of a calling data information file (hereinafter referred to as a dat file) of the power distribution master station, and immediately organizing and uploading a next frame of message. The message organization method is shown in table 5.
Table 5 104 file transfer message format
As can be seen from table 5, the file data portion of a frame message cannot exceed 229 bytes.
The format of the dat file is shown in table 6.
TABLE 6 dat File Format
As can be seen from table 6, each sampling point is 26 bytes, 26×8=208 <229, 26×9=234 >229, and thus, a frame of message can be sent with values of 8 sampling points.
In the transmission process, the current frame number (from 0) is recorded, and according to the frame number, the starting sampling point to be uploaded of the current frame can be calculated, namely: start sampling point=current frame number 8+1. Determining the initial sampling point of the current frame, namely determining the sampling point sent by the current frame, for example, the sampling point sent by the 0 th frame message is 1-8; the sample points for frame 1 up are 9-16. According to the sampling point range of each frame of message, the message content can be organized, and the message content comprises: sampling sequence number, sampling time (time relative to sampling point 1), analog quantity channel sampling value, switching value channel sampling value; the sampling sequence number can be obtained through frame number calculation, namely the sequence number corresponding to the initial sampling point; the sampling time is (sampling sequence number-1) 250 μs (sampling frequency 4000, the sampling interval between every two points is 250 μs); the sampling data can be obtained by reading the data of the corresponding position in the FLASH according to the sampling sequence number, and the obtaining method comprises the following steps: reading the starting position RCD_START of the recording data storage from the recording list information, and according to the format defined in Table 4, the sampling value reading position of the sampling point Y of the X-th analog channel is as follows: rcd_start+2240+2240 (X-1) +2 (Y-1), read length of 2 bytes; the state value reading position of the sampling point Y of the switching value channel is RCD_START+2 (Y-1), and the reading length is 2 bytes. Through the method for organizing the messages, the problem that the dat file is converted and uploaded from the custom format to the COMTRADE format is effectively solved.
According to a second embodiment of the present invention, there is provided a device for generating a feed line terminal recording file, including a configuration information file generating module and a data information file generating module.
The configuration information file generation module temporarily generates a configuration information file according to configuration information and recording starting time when receiving a message calling the configuration information file, stores the configuration information file in a FLASH fixed area of the feeder terminal, sequentially reads file contents from the fixed area and uploads the file contents; the configuration information file generating module regenerates the configuration information file and stores the configuration information file in FLASH of the feeder terminal when receiving another message calling the configuration information file, and covers the last configuration information file.
And the data information file generation module is used for calculating a starting sampling point and a sampling point range to be uploaded in the current frame when receiving the message of the calling data information file so as to determine the content of the message to be uploaded and uploading the message.
According to a third embodiment of the present invention, there is provided a power distribution terminal of an electric power system, including the apparatus for generating a wave recording file of a feeder terminal as provided in the second embodiment of the present invention above, so as to generate the wave recording file and upload the wave recording file to a power distribution master station.
In summary, the present invention relates to a method and an apparatus for generating a wave recording file of a feeder terminal, and a power system power distribution terminal including the same, wherein, when wave recording data is transmitted remotely, a configuration information file and a data information file adopt different modes, and the remote transmission of the configuration information file is to temporarily generate the configuration information file through the configuration information after receiving a call command of a master station, and then sequentially read file contents according to a storage address of the temporary file and upload the file contents. When the data information file is transmitted, the content to be uploaded of each frame of message is determined through an algorithm, and the message is immediately organized and uploaded when the message is uploaded. Therefore, the use of the storage space is reduced, the time is saved, the occupation of the recording data to the storage space is reduced, and a larger redundant space is reserved for preparing for the later new increasing demand. According to the technical scheme, when the recorded wave data is transmitted remotely, cfg files and dat files adopt different modes, wherein the cfg files are temporarily generated through configuration information after a calling command of a master station is received, and then file contents are sequentially read according to storage addresses of the temporary files and are uploaded. When the dat file is transmitted, the contents to be uploaded of each frame of message are determined through an algorithm, and the messages are immediately organized and uploaded when the messages are uploaded. The reason for this is two: firstly, the temporary file area is not required to be created, the use of storage space is reduced, secondly, the file is required to be written into FLASH in the transferring process, the file is required to be uploaded after the transferring process, and from the perspective of a user, the user cannot immediately receive a replied message after a file calling command is sent, and the user experience is influenced by waiting for a plurality of seconds and then replying the message. The cfg file size is not more than 1k, the occupied space is small, the conversion process is faster, the cfg file is transmitted after the conversion is completed, and the user experience is not affected.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (7)
1. The method for generating the wave recording file of the feeder terminal is characterized by comprising the following steps:
when a message of calling the configuration information file is received, temporarily generating the configuration information file according to the configuration information and the recording starting time, storing the configuration information file in a FLASH fixed area of the feeder terminal, sequentially reading file contents from the fixed area, and uploading the file contents;
when receiving a message of a calling data information file, calculating a starting sampling point and a sampling point range to be uploaded of a current frame, determining the content of the message to be uploaded from the wave recording list information, and uploading the message; the wave recording list information is stored in the following mode: switching value sampling points 1 and … …, switching value sampling point n, analog value channel 1 sampling points 1 and … …, analog value channel 1 sampling points n and … …, analog value channel 8 sampling points 1 and … … and analog value channel 8 sampling point n; wherein n is the number of sampling points, and n is related to the sampling frequency; the wave recording sampling is uniform sampling, and the sampling time of each sampling point is not recorded;
when receiving another message calling the configuration information file, regenerating the configuration information file, storing the configuration information file in FLASH of the feeder terminal, and covering the last configuration information file.
2. The method of claim 1, wherein calculating the starting sample point for the current frame to upload comprises calculating using the following equation:
start sampling point=current frame number 8+1.
3. The method of claim 2, wherein the calculating the sampling point range to be uploaded for the current frame comprises:
the sampling point range of the current frame is as follows: the starting sampling point of the current frame is up to (the starting sampling point of the current frame+7) sampling points.
4. A method according to claim 3, wherein the determining the message content to be uploaded includes sampling number, sampling time, sampling value of analog channel, and sampling value of switching value channel.
5. The method of claim 4, wherein the sampling sequence number is a sequence number corresponding to a starting sampling point; the sampling time is obtained by the following formula:
sample time= (sample number-1) ×250 μs.
6. The device for generating the wave recording file of the feeder terminal is characterized by comprising a configuration information file generating module and a data information file generating module; wherein, the liquid crystal display device comprises a liquid crystal display device,
the configuration information file generation module temporarily generates a configuration information file according to configuration information and recording starting time when receiving a message calling the configuration information file, stores the configuration information file in a FLASH fixed area of the feeder terminal, sequentially reads file contents from the fixed area and uploads the file contents; when receiving a message of another calling configuration information file, regenerating the configuration information file, storing the configuration information file in FLASH of the feeder terminal, and covering the last configuration information file;
the data information file generation module calculates a starting sampling point and a sampling point range to be uploaded in a current frame when receiving a message calling the data information file, determines the content of the message to be uploaded from the wave recording list information, and uploads the message; the wave recording list information is stored in the following mode: switching value sampling points 1 and … …, switching value sampling point n, analog value channel 1 sampling points 1 and … …, analog value channel 1 sampling points n and … …, analog value channel 8 sampling points 1 and … … and analog value channel 8 sampling point n; wherein n is the number of sampling points, and n is related to the sampling frequency; the wave recording sampling is uniform sampling, and the sampling time of each sampling point is not recorded.
7. A power distribution terminal of an electric power system, comprising the feeder terminal record file generating device according to claim 6, so as to generate a record file and upload the record file to a power distribution main station.
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